Parent taxon: Decabrachia according to R. Hoffmann et al. 2022
See also Boyle and Rodhouse 2005, Doyle et al. 1994, Jeletzky 1966 and Sepkoski 2002
Sister taxa: Diplobelida, Longibelus, Myopsida, Oegopsida, Sepiida, Sepiolida, Spirulida, Teuthida
Subtaxa: Arcobelus Aulacoteuthis Bayanoteuthis Belemnella Belemnellocamax Belemnitina Belemnitina Belemnocamax Belemnopseina Belemnotheutididina Belemnotheutina Belospirula Brachybelus Brevibelus Coeloteuthis Conobelus Eobelemnites Fusiteuthis Gastrobelus Gonioteuthis Holcobelus Homaloteuthis Lenobelus Mesoteuthis Neobelemnella Oxyteuthis Pachybelemnopseina Pachyduvalia Pachyteuthis Parahastites Parahibolites Patagonibelus Peratobelus Praeoxyteuthis Pseudodicoelites Raphibelus Rhopaloteuthis Sachsibelus Simobelus Simpsonibelus Sinobelemnitidae Somalibelus Volgobelus Youngibelus
Ecology: fast-moving nektonic carnivore